Digging in freezing conditions at the Zhoukoudian cave site, Pei Wenzhong pulled free a nearly complete fossil skullcap that would rewrite understanding of human evolution in Asia. The find, later named Peking Man, showed that hominins had lived in East Asia hundreds of thousands of years earlier than previously believed, cementing Zhoukoudian's status as one of the most important paleoanthropological sites on Earth.
Pei Wenzhong, then just 25 years old, had to work by candlelight in the bitter cold and used his own body heat to keep the plaster casting material from freezing as he extracted the skull. The specimen, estimated at roughly 200,000 to 700,000 years old, provided crucial evidence that Homo erectus had spread across Asia long before modern humans emerged, challenging Eurocentric assumptions about the geography of human origins.
Tragically, the original Peking Man fossils vanished in 1941 while being shipped to the United States for safekeeping ahead of the Japanese occupation, and their fate remains one of paleontology's great unsolved mysteries. Only casts and detailed descriptions made before the loss survive today, making Pei's meticulous 1929 documentation all the more historically precious.
Key people: Pei Wenzhong